document.write( "Question 333165: Solve by elimination:\r
\n" ); document.write( "\n" ); document.write( "-x+3y=6
\n" ); document.write( "x-9y=9
\n" ); document.write( "

Algebra.Com's Answer #238751 by checkley77(12844)\"\" \"About 
You can put this solution on YOUR website!
-x+3y=6
\n" ); document.write( "x-9y=9 ADD.
\n" ); document.write( "----------------
\n" ); document.write( "-6y=15
\n" ); document.write( "y=15/-6
\n" ); document.write( "y=-2.5 ans.
\n" ); document.write( "-x+3*-2.5=6
\n" ); document.write( "x+-7.5=6
\n" ); document.write( "x=6+7.5
\n" ); document.write( "x=13.5 ans.
\n" ); document.write( "Proof:
\n" ); document.write( "13.5-9*-2.5=9
\n" ); document.write( "13.5+22.5=9
\n" ); document.write( "9=9
\n" ); document.write( "
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